Malin throws a brief glance towards Maria and then speaks up, thinking that she is probably speaking for both of them here:"Then please tell us the parts that you can discuss, for one reason or the other."

It's better than nothing, and she doesn't trust him, but getting those rules from him will probably mean that they got them on better authority and with less element of doubt than if they got them from other travellers. And maybe something new will slip in.